diff --git a/backend/coreapp/compilers.py b/backend/coreapp/compilers.py
index 2a9c66b2..2f221064 100644
--- a/backend/coreapp/compilers.py
+++ b/backend/coreapp/compilers.py
@@ -1767,7 +1767,7 @@ def preset_from_name(name: str) -> Optional[Preset]:
         "-x c++ -O2 -gstabs -fno-exceptions -finline-functions",
     ),
     # Windows
-    Preset("LEGO Island", MSVC42, "/W3 /GX /O2"),
+    Preset("LEGO Island", MSVC42, "/W3 /GX /O2 /TP"),
     Preset("Touhou 6 (C)", MSVC70, "/MT /G5 /GS /Od /Oi /Ob1"),
     Preset("Touhou 6 (C++)", MSVC70, "/MT /G5 /GS /Od /Oi /Ob1 /TP"),
 ]